Skin, hide, and leather working machine



F. WAYLAND SKIN. HIDE, AND LEATHER WORKI NG MACHINE May 21, 1940.

5 Sheets-Sheet 1 Filed March 23, 1958 I May 21, 1940.

F. WAY LAND SKIN, HIDE, AND LEATHER WORKING MACHINE Filed March 23, 1938 3 Sheets-Sheet 2 May 21, 1940.

F. WAYLAND SKIN, HIDE, AND LEATHER WORKING MACHINE 3 SheetsSheet 3 Filed March 25, 1938 Patented May 21, 1940 astral UNITED STATES rArsNr orrlcs SKIN, HIDE; AND LEATHER WORKING Y MACHINE 7 Frank Wayland, Camden, N. J.

Application March 23, 1938, Serial No. 197,604-

1 Claim.

This invention relates to machines for staking, putting-out, flashing and otherwise working skins, hides and leather and has particular reference to leather working machines of the class shown and described in my United States Patents Nos. 1,077,207; 1,131,756; 1,204,914 and 2,169,739.

The object of my present invention is to improve the construction and mode of operation of machines of the class referred to and to this end I have provided certain improvements as set forth in the following description, the several novel features of the invention being separately pointed out and defined in the claim at the close thereof.

In the accompanying drawings:

Figure 1 is a front elevation of my improved leather working machine.

Figure 2 is an end elevation of the machine shown in Fig 1.

Figure 3 is a section on line 3-3 of Fig. l.

The illustrated embodiment of my invention comprises a frame including a base it and two spaced apart upright section's ii, if fixed in position upon said base.

The upright frame sections H have bracket extensions 52 fixed rigidly in position on their tops adjacent to the rear of the machine and these extensions constitute rigid parts of the frame of the machine which are constructed with alined hearings in which a transverse shaft I3 is journaled.

Between the extensions i2 the shaft l3 carries a feed roll M and at one side of the machine it has fixed thereon a pulley i5, Fig. 1, that is driven by a belt indicated by dotted lines at it.

The feed roll 14 is co-operatively associated with another feed r011 ll carried by a shaft 18 journaled at its opposite ends in two supplemental boxes l9, one of which is provided above each upright frame section H.

Below the feed rolls Hi and i1 is provided a pair of bladed work rolls 2i! and 2|, the former being fast on a shaft 22 journaled in bearings provided in the extensions 52 of the frame and the latter being fast on a shaft 23 journaled in main boxes E i slidabl-y mounted upon the tops of the upright frame sections I l. The boxes 2% are held in position on the frame sections H by guide rods 25, each of which is fastened at its one end to its frame section H as at 26, Fig. 2, and extends therefrom. loosely through a hole formed through its box 2t and into a socket 2'! formed in the extension 52 of said section.

Thus the frame of the machine is constructed with parallel ways on which the boxes 24 are slidable back and forth to shift the front work roll 2i bodily toward and from the rear work roll 22'), the-latter being driven always in the direction of the arrow 0., Fig. 3, by means of a belt 28 applied to a pulley 2% fast on the shaft 32 of said rear work roll 2G.

The shaft 22 of the rear work roli has fixed on it a gear 3%, Fig. 2, meshing with a gear 35 that is loosely mounted upon a stud shaft 32 projecting from the frame of the machine. Gearv 3i drives a-fioating gear 33 which, in turn continuously drives a gear 13 i fast on the shaft 2.3 of the front work roll 2i so as to rotate said front roll continuouslyin the direction of the arrow b, Fig. 3, at the same peripheral speed as that of the rear work roll 28.

The gear 33 is loosely mounted upon a stud shaft 35 projecting from the lower end of a link 35 whose upper end is pivotally mounted upon the shaft 23 of the front work roll. This link 36 holds the gear 33 in mesh with gear 3 t while a second link 3i pivotally mounted at its opposite'ends upon the studshafts'f? and tti, respectively, holds the gear 33 in mesh with the gear 3!. It will thus be clear that the above described gearing including the two links and the floating gear 33' provide a flexible power transmitting mechanism through which the rear work roll shaft continuously drives the front Work roll shaft so as to provide for movement of the latter toward and from shaft 22.

Mechanism is herein provided that is manually operable to shift the slides or boxes and parts carried thereby on the frame ofthe machine to simultaneously open or close the feed rolls and the work rolls thereby to permit the ,work W, Fig. 3, to be inserted and operated upon by the machine or to be removed from the latter. This mechanism may comprise two toggles 38; one for each slide or box 24', a foot lever 39 and two links.

49, connecting the knees or middle joints of the toggles with the foot lever 39.

One end of each toggle 38 is pivotally fconnected as at 4| with one of the slides or boxes 24' while its opposite end is pivotally connected as at 42 to a bracket 53 fastened by a screw M to the proximate upright frame section ll so that it can be adjusted toward and from the box or slide 24 and fixed in its adjusted position. An abutment screw 45 adjustably mounted on the frame of the machine bears against the front side of bracket 53 to prevent accidental (hsplacement of the latter.

The foot lever 39 comprises a pair of arms fulcrumed on a shaft 46 mounted in brackets ll fast on the top side of base l8 and the free ends of the arms of the foot lever are connected by a foot board or bar 48 fastened at its opposite ends to said arms. Thus, by foot pressure on the crossbar 48 the lever 39 acts through the links 49 to force the knees or middle joints of the toggles downwardly thereby forcibly shifting the boxes or slides 24 toward the rear of the machine so as to cause the feed roll I! to force the sheet material W against the continuously rotating feed roll 14 and so as to cause the blades of the work roll 2| to intermesh with the blades of the rear work roll 20.

The work rolls 20 and 2| are constructed with spiral blades after the manner of the work rolls l4 and I5 of my Patent No. 2,109,739 referred to above and they operate in the usual fashion to stretch the material W longitudinally and laterally in opposite directions from its middle and to also flex and scrape the material W as heretofore.

Each supplemental box I9 is mounted upon one of the lower main boxes or slides 24 and connected therewith by means of a rod 49, Figs. 2 and 3, which extends loosely through holes formed in the boxes l9 at right angles to the shaft I8. Each rod 49 is fixed at one end to its lower box or slide 24 While its opposite end is slidably mounted within a socket 511 formed through the frame extension I2.

The lower box or slide 24 is made with an upstanding lug 5| formed with a threaded hole through which extends a screw 52 whose outer or forward end is made with a handle 53 and Whose inner end is swivelly connected with the upper box or slide section l9 as at 54. As will be clear, the screw 52 not only holds the upper box I9 rigidly in adjusted position on the lower box or slide 24 but by rotating said screw said upper box may be adjusted toward and from the driven feed roll M as may be required to secure the proper intermeshing of the work rolls 2D and 2|.

Between and secured at its opposite ends to the upper boxes I9 is a flat table 55 on to which the skin, hide or leather W is placed and held by the operator while the machine operates upon said material W. The operator stands upon the base ill with one foot upon the crossbar 48 of the treadle and by operating the latter with his foot can open and close the feed rolls and work rolls as required in inserting, operating upon and removing the sheet material W.

In staking leather the latter is laid upon the table 55 and slid forward thereon so as to place its forward end between the feed rolls while the latter are open, then the operator presses downwardly upon the treadle 39 and closes the rolls so that the latter engage the material while the feed roll [4 is driven in the direction of the arrow 0 in Fig. 2 at a peripheral speed that is less than the peripheral speeds of the work rolls 20 and 2 I. When the leather has been fed into the machine a predetermined distance the operator relieves the treadle 39 of foot pressure whereupon a weight 56 acts through said treadle and the mechanism connecting the same with the boxes or slides 24 to shift the latter away from the rear work roll 20 and the rear feed roll I4. The leather is then reversed end for end on the table 55 and again fed into the machine a pre-determined distance whereupon it is again released and removed, which completes the operation of staking.

In putting-out and other operations the feed roll l4 may be driven in the direction indicated by the arrow d after inserting the work W into the machine between the work rolls and the feed rolls and then when the rolls are closed the feed rolls will forcibly draw the skin upwardly between the work rolls and discharge it from the machine. Thus a reversible drive for the feed roll l4 may be provided as set forth in my Patent #2,109,739, although said reversible drive is not herein illustrated.

Because of the simplicity of its construction the above described machine is very much less expensive to construct than my prior machines of this class and is of greater efficiency than the latter for the reason that the feed rolls and work rolls can be opened and closed by the operator instantly by means of the foot treadle, whereas in the machines of this class heretofore provided the two front rolls were carried by a swinging frame operated by an eccentric on a countershaft at the rear and it was necessary for this eccentric to make one-half of a revolution to open the rolls and one-half of a revolution to close the rolls and these operations were much slower than in the present machine.

What I claim is:

In a machine of the character described, the combination of a pair of opposed spirally bladed intermeshing work rolls for simultaneously engaging the opposite sides of the sheet material that is operated upon; means for continuously rotating said rolls to cause the same to flex and scrape said material and also to stretch the same longitudinally and transversely; a pair of opposed feed rolls disposed above and adjacent to said work rolls so as to coact with the latter in stretching the material longitudinally; a main frame on which one roll of each of said two pairs is journaled; two main journal boxes slidably mounted on said main frame so that they are movable toward and from the two rolls which are mounted on the latter, said main journal boxes rotatably supporting the other work roll; two supplemental journal boxes each of which is mounted on one of said main journal boxes so that it is slidably adjustable thereon toward and from the two rolls which are mounted on said main frame, said supplemental journal boxes rotatably supporting the other feed roll; means for fixing each supplemental journal box in its adjusted position on its main journal box, and footoperated toggle mechanism operable to slide said main journal boxes on said main frame toward and from the two rolls which are mounted upon the latter, movement of said journal boxes toward said last-mentioned rolls being limited by the engagement of said two feed rolls with the work.

FRANK WAYLAN'D. 

